Improvement in burglar-alarm locks



UNITED STATES PATENT OEEIcE.

` A. ooEEY, oE onssfrow'n, oHIo.

IMPROVEMENT IN BURGLAR-ALARM LOCKS.

Specification forming part of Letters Patent No. 20,333, dated May,1858.

To all whom it may concern:

Bc it known that I, ADDISON COREY, of the town of Gasstown, in thecounty of Miami and State of Ohio, have invented anew and usefulImprovement ona Door-Lockwith Attachvmerits5-and Ido hereby declare thatthe following is a full and exact description thereof, ref;`

voltaopistol, for the better protection .of perJ sons and propertyfromburglars entering their apartments while asleep, giving warning of thepresence of the same, that they may be taken and secured. o

To enable others skilled in the art to make and use my invention I willproceed' to describe its construction and operation.

A lock may be made of any size or pattern desired, with theoutside knob,A, Plate I, divided into two sections and insulated, so that the parwhich works the latch will screw tightly into one of these parts, thatit may be taken off and another putin its place whenever desired.

The knob 'may be made of brass or other metal, and insulated with'gum-shellac or any other substance accomplishing 4the same; or mineralor other kinds of knobs may be constructed with two pieces of metalembedded in them as ornaments orv otherwise, and con nected ashereinafter described.

A ferrule or ring, a, is made to slide on the l knob at c, and another,`b, to slide on the bar of the knob, these ferrules being made of wood,ivory, bone, or some nonconductin,g,` substance.

'These two pieces thus put on and the knob screwed on tightly brings onepart of the knob in connection with the bar and the other with aninsulated wire, d e, passing along in a groove'in the har d and cementedin its place with gum-shellac, and terminating with an in sulatedconducting-cord, As, fastened to an insulated metal piece inserted inthe upper part of the lockframe or otherwise, as 'at s.

The lock is provided with a lever, p, operated on by aspring andfastened o n the righthand end of the boltj` and working on a piu at thelower end,so that, taking hold of the top of the lever 1J and drawing itback, the. bolt f will draw back and catch in the notch e, and then itis set. Now, if the knobbe turned either way, the two arms at t willpress on'the wart at u or u and bear the boltfdown out of the notch c,and allow the spring to throw the leverp forward with ajerk; and, also,the lever t, having two horns, o o,`which, it' pressed .either up ordownrwll pressoneither of the two pins in the piece h, which turns onthe center pin, and draw the bolt f down out of the Y notch e, asbefore, by thearm w,- and, again,

if a key be inserted which is not provided with The piece l: is fastenedto the boltj so as to work up and down, but not lengthwise with regardto the bolt, 'and the bolt j is to throw this point k out or in thekey-circle, so that another key will not pass when the point is in thecircle of the key, and the key q q having two notches so arranged as topass over the pointltando o, and unlock the bolt g and throw the boltjhack and bring the point k out of the way of the main key, which unlocksthe bolt m. The bolt ghas two pins in it to work against the upright armof l, so that after bolt m is locked g will lock and move l into thenotch at m and hold the main bolt m fast until g is unlocked. There isalso asliding button,:r, Plate II, fastened to the bolt g, that it maybefastened fromthe inside, and no key can unlock it,which secures theboltm from being unlocked. 't is the piece or tumbler which slides onthe bar d and works the latch.

im anda are the bolt andlatch ofpa common lock, The boltj' iszlplaced bythe side of n, q by the side of m, and j bythe side of i, as will beseen in the lock.' There are two keys to be used with the lock,the oneto llock and unlock the bolt g with its two notches, as seen at q g,

and the other to lock and unlock the bolt m, and the keys can be variedin different locks. The attachments are, B, a galvanic battery, arrangedwith a clamp and treadle, y, Plate II, to hold the galvanic plates overand out of the solution, which treadle is to be connected to the lever pin the lock, so that when the knob is turned or a key or wire insertedwhich may will instantly light up the room, and a voltaic pistol, M, isto be attached, when desired, in order to scare the robbers away whentoo timid to go out and take them. Any or all of these attachments maybe used at the same time.

What I claim as my invention, and desire 'to secure by Letters Patent,is I The application to door-locks of theinsulated knob, these extrabolts, levers, and springs in this arrangement with any lock, and thesedseveral galvanic attachments in combination with the lock, as hereindescribed, or any others substantially the same, and which will producethe intended effect.v

ADDISON o'oREY.

Witnesses:

WILLIAM BURTON,

ASA ROGERS.

